Agent VB Middleware Release Notes

The following sections list every released version of Agent VB Middleware, newest first. Each section comes from the monthly OCP® Release Notes page named in its Released line.

Agent VB Middleware 6.21.1

Released: October 2026

Improvements

• Enrollment control from NICE Agent Assist — The enrollEnable setting can now be passed through customProperties. In NICE Agent Assist integrations, enrollment can be turned on or off directly from the Studio script, without creating the session token separately.

• ANI Validation in analytics events — ANI Validation results are now included in the events published to Kafka, so they are available for reporting together with the other verification data.

• Analytics for Voice Biometrics-only calls — The agent summary event is now also sent at the end of Voice Biometrics-only calls. Events now identify the session type (VB, AA or AA_VB) and include the Voice Biometrics profile.

• Configurable verification labels — The simple biometric verification label can now be configured per session.

Bug Fixes

• Liveness result after widget reconnect — The liveness result is now shown in the widget even when the widget connects or reconnects after the result was first produced.

• Speech recognition connection recovery — When the speech recognition connection is closed because of inactivity, the call now reconnects automatically once the caller speaks again. Speech recognition protocol errors are now reported with error code ERR_CODE_05.

• Long calls — Session data is now kept until 30 minutes after the last activity and is refreshed while audio is streaming. It is no longer removed when the widget connection closes.

• Unknown users — A request for a user that is not enrolled now returns the message "User not found. Verification unavailable." instead of an internal error.

Security

• Third-party libraries were updated to address reported vulnerabilities.

Agent VB Middleware 6.21.0

Released: August 2026

New Features

• Automatic PCI Data Protection During Voice Biometric Enrollment - OCP VB Agent-side Authentication® enrollment and verification now automatically detect and set aside any recorded speech containing sensitive payment card data, protecting customers without extra agent effort. Enrollment reaches a quick initial checkpoint sooner, while additional safeguards ensure only clean, nonsensitive speech counts toward enrollment. When sensitive content can't be confidently checked, that portion is skipped, so it's never retained.

Agent VB Middleware v6.20.7

Released: May 2026

Improvements

• Event Timestamps - Stream start timestamps are now correctly initialized for voice bot events, ensuring accurate session timing and downstream reporting.

• File Enrollment - Action Buttons - Resolved an issue where action buttons remained disabled after successfully completing a file enrollment. Buttons now become interactive immediately upon completion.

Security

• WebSocket Authentication Hardening - JWT authentication tokens are no longer passed via URL query parameters. They are now transmitted via a secure request header, reducing exposure in server logs and browser history. Browser clients authenticate via a first-message AUTH command.

Reliability

• Genesys Multi-Pause Stability - A race condition affecting multi-pause scenarios in Genesys integrations has been resolved. Three safeguards have been added to prevent dialog counter drift, improving session consistency under concurrent operations.

• DeepASR Recording Uploads - Recording data is now correctly submitted to the DeepASR API after each final recognition step, ensuring complete and accurate transcription data capture throughout a session.

Agent VB Middleware 6.20.5.5

Released: March 2026

• Adds RMap logic for the Agent middleware to work with Redis versions below 7.0.